\u4ece\u672c\u8d28\u4e0a\u8bb2\uff0cDOS\u548cDDOS\u653b\u51fb\u90fd\u65e8\u5728\u7834\u574f\u670d\u52a1\u5668\u6216\u7f51\u7edc\u7684\u6b63\u5e38\u8fd0\u884c\u3002\u7136\u800c\uff0c\u5b83\u4eec\u7684\u6267\u884c\u65b9\u6cd5\u5b58\u5728\u663e\u8457\u5dee\u5f02\uff1a<\/p>\n

\n
• DOS\u653b\u51fb\uff1a<\/strong>\u6e90\u81ea\u5355\u4e00\u6765\u6e90\uff0c\u8bd5\u56fe\u901a\u8fc7\u6d41\u91cf\u6216\u8bf7\u6c42\u6d2a\u6c34\u6df9\u6ca1\u76ee\u6807\u3002<\/li>\n
• DDOS\u653b\u51fb\uff1a<\/strong>\u5229\u7528\u591a\u4e2a\u88ab\u5165\u4fb5\u7684\u7cfb\u7edf\uff08\u901a\u5e38\u662f\u50f5\u5c38\u7f51\u7edc\uff09\u4ece\u5404\u4e2a\u70b9\u53d1\u8d77\u534f\u8c03\u653b\u51fb\u3002<\/li>\n<\/ul>\n

  \u5173\u952e\u533a\u522b\u5728\u4e8e\u653b\u51fb\u7684\u89c4\u6a21\u548c\u590d\u6742\u6027\u3002\u7531\u4e8e\u5176\u5206\u5e03\u5f0f\u7279\u6027\uff0cDDOS\u653b\u51fb\u901a\u5e38\u66f4\u5177\u5a01\u529b\u548c\u96be\u4ee5\u7f13\u89e3\uff0c\u4f7f\u5176\u6210\u4e3a\u670d\u52a1\u5668\u79df\u7528\u751f\u6001\u7cfb\u7edf\u4e2d\u4e00\u4e2a\u5f3a\u5927\u7684\u5a01\u80c1\u3002<\/p>\n

  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n

  \u653b\u51fb\u7c7b\u578b\uff1a\u6df1\u5165\u63a2\u8ba8<\/strong><\/h2>\n

  \u4e3a\u4e86\u6709\u6548\u5bf9\u6297\u8fd9\u4e9b\u5a01\u80c1\uff0c\u4e86\u89e3\u5404\u79cd\u653b\u51fb\u5411\u91cf\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n

  \n
  • SYN\u6d2a\u6c34\uff1a<\/strong>\u901a\u8fc7\u53d1\u9001\u5927\u91cfSYN\u8bf7\u6c42\u800c\u4e0d\u5b8c\u6210\u8fde\u63a5\u6765\u5229\u7528TCP\u63e1\u624b\u3002<\/li>\n
  • UDP\u6d2a\u6c34\uff1a<\/strong>\u7528UDP\u6570\u636e\u5305\u6df9\u6ca1\u76ee\u6807\u7cfb\u7edf\u7684\u968f\u673a\u7aef\u53e3\u3002<\/li>\n
  • HTTP\u6d2a\u6c34\uff1a<\/strong>\u901a\u8fc7\u5927\u91cfGET\u6216POST\u8bf7\u6c42\u6df9\u6ca1Web\u670d\u52a1\u5668\u3002<\/li>\n
  • \u6b7b\u4ea1\u4e4bPing\uff1a<\/strong>\u53d1\u9001\u8d85\u5927ICMP\u6570\u636e\u5305\u4f7f\u76ee\u6807\u7cfb\u7edf\u5d29\u6e83\u3002<\/li>\n
  • Slowloris\uff1a<\/strong>\u4e00\u79cd\u4f4e\u5e26\u5bbd\u653b\u51fb\uff0c\u901a\u8fc7\u53d1\u9001\u90e8\u5206HTTP\u8bf7\u6c42\u4fdd\u6301\u8fde\u63a5\u5f00\u653e\u3002<\/li>\n<\/ul>\n

    \u6bcf\u79cd\u653b\u51fb\u7c7b\u578b\u90fd\u9700\u8981\u7279\u5b9a\u7684\u7f13\u89e3\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u8981\u68c0\u6d4b\u6f5c\u5728\u7684SYN\u6d2a\u6c34\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n

    netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n<\/code><\/pre>\n
    \u6b64\u547d\u4ee4\u5217\u51fa\u6765\u81ea\u6bcf\u4e2aIP\u5730\u5740\u7684\u8fde\u63a5\u6570\uff0c\u6709\u52a9\u4e8e\u8bc6\u522b\u5f02\u5e38\u9ad8\u7684\u8fde\u63a5\u5c1d\u8bd5\u3002<\/p>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u5f71\u54cd\u5206\u6790\uff1aDOS\u4e0eDDOS\u5bf9\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u7684\u5f71\u54cd<\/strong><\/h2>\n
    \u8fd9\u4e24\u79cd\u653b\u51fb\u7c7b\u578b\u90fd\u53ef\u80fd\u4e25\u91cd\u5f71\u54cd\u670d\u52a1\u5668\u79df\u7528\u670d\u52a1\uff0c\u4f46\u5b83\u4eec\u7684\u5f71\u54cd\u53ef\u80fd\u6709\u6240\u4e0d\u540c\uff1a<\/p>\n\n\n\n\n\n\n
    \u65b9\u9762<\/th>\n
    DOS\u5f71\u54cd<\/th>\n
    DDOS\u5f71\u54cd<\/th>\n<\/tr>\n
    \u670d\u52a1\u5668\u8d1f\u8f7d<\/td>\n
    \u9ad8\uff0c\u4f46\u53ef\u63a7<\/td>\n
    \u6781\u7aef\uff0c\u5e38\u5e38\u4e0d\u582a\u91cd\u8d1f<\/td>\n<\/tr>\n
    \u5e26\u5bbd\u6d88\u8017<\/td>\n
    \u663e\u8457<\/td>\n
    \u5927\u89c4\u6a21\uff0c\u53ef\u80fd\u5f71\u54cd\u6574\u4e2a\u7f51\u7edc<\/td>\n<\/tr>\n
    \u670d\u52a1\u4e2d\u65ad<\/td>\n
    \u5c40\u90e8\u6027<\/td>\n
    \u5e7f\u6cdb\uff0c\u5f71\u54cd\u591a\u9879\u670d\u52a1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u68c0\u6d4b\u653b\u51fb\uff1a\u8bc6\u522bDOS\u548cDDOS\u653b\u51fb<\/strong><\/h2>\n
    \u8bc6\u522b\u6b63\u5728\u8fdb\u884c\u7684\u653b\u51fb\u5bf9\u4e8e\u5feb\u901f\u54cd\u5e94\u81f3\u5173\u91cd\u8981\u3002\u4e3b\u8981\u6307\u6807\u5305\u62ec\uff1a<\/p>\n
    \n
    \u5f02\u5e38\u7684\u6d41\u91cf\u5cf0\u503c<\/li>\n
    \u7f51\u7edc\u6027\u80fd\u7f13\u6162<\/li>\n
    \u5783\u573e\u90ae\u4ef6\u6570\u91cf\u589e\u52a0<\/li>\n
    \u670d\u52a1\u5668\u5d29\u6e83\u6216\u8d85\u65f6<\/li>\n<\/ul>\n
    \u8981\u5feb\u901f\u68c0\u67e5\u7f51\u7edc\u6d41\u91cf\uff0c\u8bf7\u4f7f\u7528\uff1a<\/p>\n
    tcpdump -nn -i eth0 'tcp[tcpflags] & (tcp-syn) != 0'<\/code><\/pre>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u52a0\u5f3a\u9632\u5fa1\uff1a\u4fdd\u62a4\u7b56\u7565\u548c\u5de5\u5177<\/strong><\/h2>\n
    \u5bf9\u670d\u52a1\u5668\u79df\u7528\u7528\u6237\u6765\u8bf4\uff0c\u5b9e\u65bd\u5f3a\u5927\u7684\u4fdd\u62a4\u63aa\u65bd\u81f3\u5173\u91cd\u8981\u3002\u8003\u8651\u4ee5\u4e0b\u7b56\u7565\u548c\u5de5\u5177\uff1a<\/p>\n
    \n
    \u6d41\u91cf\u8fc7\u6ee4\uff1a<\/strong>\u5b9e\u65bd\u667a\u80fd\u6d41\u91cf\u8fc7\u6ee4\u4ee5\u8bc6\u522b\u548c\u963b\u6b62\u6076\u610f\u8bf7\u6c42\u3002<\/li>\n
    \u901f\u7387\u9650\u5236\uff1a<\/strong>\u8bbe\u7f6e\u901f\u7387\u9650\u5236\u4ee5\u9650\u5236\u6765\u81ea\u5355\u4e2aIP\u7684\u8bf7\u6c42\u6570\u91cf\u3002<\/li>\n
    \u8d1f\u8f7d\u5747\u8861\uff1a<\/strong>\u5c06\u6d41\u91cf\u5206\u914d\u5230\u591a\u4e2a\u670d\u52a1\u5668\uff0c\u4ee5\u51cf\u8f7b\u653b\u51fb\u7684\u5f71\u54cd\u3002<\/li>\n
    Web\u5e94\u7528\u9632\u706b\u5899\uff08WAF\uff09\uff1a<\/strong>\u90e8\u7f72WAF\u4ee5\u8fc7\u6ee4\u5e94\u7528\u5c42\u7684\u6076\u610f\u6d41\u91cf\u3002<\/li>\n<\/ol>\n
    \u7528\u4e8eDOS\u548cDDOS\u4fdd\u62a4\u7684\u6d41\u884c\u5de5\u5177\u5305\u62ec\uff1a<\/p>\n
    \n
    Fail2ban\uff1a<\/strong>\u4e00\u79cd\u5165\u4fb5\u9632\u5fa1\u8f6f\u4ef6\uff0c\u53ef\u9632\u6b62\u66b4\u529b\u653b\u51fb\u3002<\/li>\n
    ModSecurity\uff1a<\/strong>\u5f00\u6e90Web\u5e94\u7528\u9632\u706b\u5899\u3002<\/li>\n
    Snort\uff1a<\/strong>\u80fd\u591f\u8fdb\u884c\u5b9e\u65f6\u6d41\u91cf\u5206\u6790\u7684\u5f00\u6e90\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0b\u662f\u5b9e\u65bd\u57fa\u672c\u901f\u7387\u9650\u5236\u7684\u7b80\u5355Nginx\u914d\u7f6e\uff1a<\/p>\n
    http {\r\n    limit_req_zone $binary_remote_addr zone=one:10m rate=1r\/s;\r\n    server {\r\n        location \/login\/ {\r\n            limit_req zone=one burst=5;\r\n        }\r\n    }\r\n}<\/code><\/pre>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u6027\u80fd\u4f18\u5316\uff1a\u63d0\u9ad8\u653b\u51fb\u62b5\u6297\u529b<\/strong><\/h2>\n
    \u4f18\u5316\u670d\u52a1\u5668\u6027\u80fd\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u5176\u62b5\u5fa1\u653b\u51fb\u7684\u80fd\u529b\u3002\u8003\u8651\u4ee5\u4e0b\u6280\u672f\uff1a<\/p>\n
    \n
    \u5185\u6838\u8c03\u4f18\uff1a<\/strong>\u8c03\u6574\u5185\u6838\u53c2\u6570\u4ee5\u66f4\u6709\u6548\u5730\u5904\u7406\u9ad8\u8d1f\u8f7d\u3002<\/li>\n
    \u7f51\u7edc\u6808\u4f18\u5316\uff1a<\/strong>\u5fae\u8c03\u7f51\u7edc\u6808\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u6027\u80fd\u3002<\/li>\n
    Web\u670d\u52a1\u5668\u914d\u7f6e\uff1a<\/strong>\u4f18\u5316Web\u670d\u52a1\u5668\u8bbe\u7f6e\u4ee5\u589e\u5f3a\u62b5\u6297\u529b\u3002<\/li>\n<\/ol>\n
    \u4f8b\u5982\uff0c\u8981\u589e\u52a0\u6700\u5927\u6253\u5f00\u6587\u4ef6\u6570\u548cTCP\u79ef\u538b\u961f\u5217\uff0c\u8bf7\u4f7f\u7528\uff1a<\/p>\n
    # \u589e\u52a0\u6700\u5927\u6253\u5f00\u6587\u4ef6\u6570\r\nsysctl -w fs.file-max=65535\r\n\r\n# \u589e\u52a0TCP\u79ef\u538b\u961f\u5217\r\nsysctl -w net.ipv4.tcp_max_syn_backlog=2048<\/code><\/pre>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u5373\u65f6\u54cd\u5e94\uff1a\u53d7\u5230\u653b\u51fb\u65f6<\/strong><\/h2>\n
    \u5982\u679c\u60a8\u6000\u7591\u60a8\u7684\u670d\u52a1\u5668\u79df\u7528\u670d\u52a1\u5668\u6b63\u5728\u53d7\u5230\u653b\u51fb\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n
    \n
    \u8bc6\u522b\u653b\u51fb\u7c7b\u578b\u548c\u6e90IP\u5730\u5740\u3002<\/li>\n
    \u7acb\u5373\u8054\u7cfb\u60a8\u7684\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u3002<\/li>\n
    \u6682\u65f6\u963b\u6b62\u53ef\u7591\u7684IP\u8303\u56f4\u3002<\/li>\n
    \u5982\u679c\u53ef\u80fd\uff0c\u589e\u52a0\u670d\u52a1\u5668\u8d44\u6e90\u3002<\/li>\n
    \u8003\u8651\u6fc0\u6d3b\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u4ee5\u5206\u914d\u6d41\u91cf\u3002<\/li>\n<\/ol>\n
    \u957f\u671f\u5f71\u54cd\u548c\u6062\u590d<\/strong><\/h2>\n
    DOS\u548cDDOS\u653b\u51fb\u7684\u540e\u679c\u53ef\u80fd\u6301\u7eed\u5b58\u5728\u3002\u8bf7\u51c6\u5907\u597d\u89e3\u51b3\u4ee5\u4e0b\u95ee\u9898\uff1a<\/p>\n
    \n
    \u6f5c\u5728\u7684\u6570\u636e\u4e22\u5931\u6216\u635f\u574f<\/li>\n
    \u670d\u52a1\u5668\u6027\u80fd\u4e0b\u964d<\/li>\n
    \u58f0\u8a89\u635f\u5bb3\u548c\u5ba2\u6237\u4fe1\u4efb\u95ee\u9898<\/li>\n<\/ul>\n
    \u5b9a\u671f\u5907\u4efd\u548c\u5168\u9762\u7684\u707e\u96be\u6062\u590d\u8ba1\u5212\u5bf9\u4e8e\u8fc5\u901f\u6062\u590d\u670d\u52a1\u81f3\u5173\u91cd\u8981\u3002<\/p>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u6cd5\u5f8b\u5f71\u54cd\u548c\u7528\u6237\u6743\u5229<\/strong><\/h2>\n
    \u5c3d\u7ba1DOS\u548cDDOS\u653b\u51fb\u5728\u8bb8\u591a\u53f8\u6cd5\u7ba1\u8f96\u533a\u90fd\u662f\u975e\u6cd5\u7684\uff0c\u4f46\u7531\u4e8e\u653b\u51fb\u8005\u5f80\u5f80\u5177\u6709\u56fd\u9645\u6027\u8d28\uff0c\u8d77\u8bc9\u4ed6\u4eec\u53ef\u80fd\u5177\u6709\u6311\u6218\u6027\u3002\u4f5c\u4e3a\u670d\u52a1\u5668\u79df\u7528\u7528\u6237\uff0c\u60a8\u6709\u6743\u5411\u6267\u6cd5\u90e8\u95e8\u62a5\u544a\u653b\u51fb\u5e76\u5bfb\u6c42\u635f\u5bb3\u8d54\u507f\uff08\u67e5\u770b\u60a8\u7684\u670d\u52a1\u7ea7\u522b\u534f\u8bae\uff09\u3002<\/p>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u65b0\u5174\u5a01\u80c1\u548c\u672a\u6765\u89c4\u5212<\/strong><\/h2>\n
    DOS\u548cDDOS\u653b\u51fb\u7684\u683c\u5c40\u4e0d\u65ad\u6f14\u53d8\u3002\u8bf7\u5173\u6ce8\u4ee5\u4e0b\u65b9\u9762\uff1a<\/p>\n
    \n
    \u80fd\u591f\u9002\u5e94\u9632\u5fa1\u673a\u5236\u7684AI\u9a71\u52a8\u653b\u51fb<\/li>\n
    \u80fd\u591f\u8fdb\u884c\u5927\u89c4\u6a21\u653b\u51fb\u7684IoT\u50f5\u5c38\u7f51\u7edc<\/li>\n
    \u9488\u5bf9\u5e94\u7528\u7a0b\u5e8f\u6f0f\u6d1e\u7684\u7b2c7\u5c42\u653b\u51fb<\/li>\n<\/ul>\n
    \u5b9a\u671f\u66f4\u65b0\u60a8\u7684\u5b89\u5168\u534f\u8bae\uff0c\u5e76\u8003\u8651\u6295\u8d44\u9ad8\u7ea7\u5a01\u80c1\u60c5\u62a5\u670d\u52a1\uff0c\u4ee5\u5e94\u5bf9\u65b0\u5174\u5a01\u80c1\u3002<\/p>\n
    [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
    \u7ed3\u8bba\uff1a\u670d\u52a1\u5668\u79df\u7528\u751f\u6001\u7cfb\u7edf\u4e2d\u7684\u8b66\u60d5<\/strong><\/h2>\n
    \u5728\u670d\u52a1\u5668\u79df\u7528\u7684\u52a8\u6001\u4e16\u754c\u4e2d\uff0c\u5e94\u5bf9DOS\u548cDDOS\u5a01\u80c1\u9700\u8981\u4e0d\u65ad\u7684\u8b66\u60d5\u548c\u9002\u5e94\u3002\u901a\u8fc7\u4e86\u89e3\u8fd9\u4e9b\u653b\u51fb\u7684\u7ec6\u5fae\u5dee\u522b\uff0c\u5b9e\u65bd\u5f3a\u5927\u7684\u9632\u5fa1\u7b56\u7565\uff0c\u5e76\u4fdd\u6301\u79ef\u6781\u4e3b\u52a8\u7684\u6001\u5ea6\uff0c\u670d\u52a1\u5668\u79df\u7528\u7528\u6237\u53ef\u4ee5\u663e\u8457\u589e\u5f3a\u5176\u5bf9\u8fd9\u4e9b\u4e0d\u65ad\u6f14\u53d8\u7684\u5a01\u80c1\u7684\u62b5\u6297\u529b\u3002\u8bf7\u8bb0\u4f4f\uff0c\u5728\u7f51\u7edc\u5b89\u5168\u9886\u57df\uff0c\u77e5\u8bc6\u548c\u51c6\u5907\u662f\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u514d\u53d7DOS\u548cDDOS\u653b\u51fb\u7684\u6700\u5f3a\u5927\u76df\u53cb\u3002<\/p>\n
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